There are many 1-1/4" high performance springs available, but most are too short.
The stock assembled height is about 1.86".
The Buick (TRW #VS1020) single spring with damper lifts to .440", height 1.89", pressures 78/242 lbs.
Buick VS1016 single spring with damper lifts to .420", height 1.87", pressures 80/204 lbs.